Sawmill-carriage offset.



G. M. PELTON. SAWMILL CARRIAGE OFFSET. APPLICATION FILED NOV. 1, 1911.

Patented Sept. 16,1913.

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COLUMBIA PLANOGRAPH co., WASHINGTON, n, c.

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GEORGE M. PEI/ION, 0F MILVIAUKEE, WISCONslIN, ASSIGNOB TO FILER ANDSTOWELL COMPANY, OF MILWAUKEE, WISCONSIN, A CORPORATION OF HIS- CONSIN.

SAWMILL-CARRIAGE OFFSET.

Specification of Letters Patent.

Patented Sept. 16,1913.

Application filed November 1, 1911. Serial No. 657,954.

To all whom it may concern Be it known that I, Gnonon M. PnnroN, acitizen of the United States, residing at Mil.- waukec, in the county ofMilwaukee and State of Wisconsin, have invented certain new and usefulImprovements in Sawmill- Carriage Offsets, of which the following is aspecification, reference being had to the accompanying drawing, forminga part thereof. a

This invention relates to sectional or main and auxiliary carriageswhich are provided with mechanism for moving the carriage frames or logsupports toward the saw plane when they are fed forward and'away fromsaid plane when they are run back or a gigged so that the log or timberfrom which a out has been made will not come in contact with the saw inrunning back or gigging The main objectof the invention is toautomatically and operatively connect the offsetting mechanism of theauxiliary carriage with that of the main carriage when they are coupledin order to lengthen the carriage for sawing long logs or timber.

It consists in the construction, arrangement and combination of parts asherein after particularly described and pointed out in the claims.

In the accompanying drawing like characters designate the same parts inthe several figures.

Figure 1 is a plan view of the proximate ends of two carriages withofisett-ing mech anism embodying the invention; Fig. 2 is a sideelevation of the same; and Fig. 3 is an end elevation of the maincarriage as viewed from the left relative to Figs. 1 and 2, the trackrails and sills being shown in cross section.

a and b designate the sections of an ex tensible sawmill carriage ormain and auxiliary carriages, the' additional section or auxiliarycarriage I), being provided for occasional or temporary use in sawinglogs or timber of extra length. Each section or car riage comprises aframe 0 which is movable transversely to the saw plane on the axles clof the truck wheels e and f, which run on the track rails g and k, thewheels 6 on the rear side of the carriage being grooved and the rail 9correspondingly formed to guide and hold the carriage in place on thetrack.

At their proximate ends the carriages a and b are provided with couplinghooks i and j, or other suitable means for connecting them together endto end. .The noses of the hooks are beveled and the hook jis pivoted tothe carriage a so as to automatically engage with the hook z' when thetwo carriages are brought together end to end, as shown.

A spring 7c inserted between a lateral projection on hook j-and'theplate to which it is pivoted, tends to move said hook into and hold itin operative position relative to the book 2'. A toe or projection Z onthe hook j acts by engagement with the pivot plate as a stop to limitthe movement of said hook by the spring 72 toward the hook i, so thatwhen the carriages are separated the beveled noses of the hooks will bein the proper relation to each other for engagement when .the carriagesare brought together.

Eachcarriage is provided with offsetting mechanism for moving its frame0 with the head blocks (not shown) on which a log or timber to be sawedis placed toward the saw plane when the carriage is fed forward, andaway from the saw plane when the carriage is gigged or moved backward sothat the log or timber from which a out has been made will noton itsreturn movement, come in contact with the saw. The offsetting mechanismon each carriage comprises elbow-shaped or angular offsetting levers an,fulcrumed at their elbows to brackets n on the rear sill of the framecadjacent to the ends of the carriage and pivotally connected by theirshorter arms with collars 0 loosely or revolubly mounted on truck axles(Z between collars p, which are fixed on said axles. The longerrearwardly extending arms of the levers m which areapproximatelyparallel with the axles (Z, are connected on the maincarriage a by rods 9 with a vertically and longitudinally movable dragshoe 1, which is guided on the rear carriage rail g by anupwardlyextending flat stem 8 loosely fitting and movable vertically andlengthwise ofthecarriage in a keeper or guide t attached to the rearsill of the carriage frame 0.

In the operation of the carriage, when it is. started forward, the shoe9" tending to dwell on the rail 9 by reason of its friction engagementtherewith, causes the offsetting leversm to swing forward on their pivotconnections with therods ([andthereby shift the carriage frame 0 withthe head truck wheels f, or until such movement is arrested by otherstops provided therefor. In order that the offsetting mechanism of theaux liary carriage b may be automatically coupled and operated inunisonwith the offsetting mechanism of the main carriage a, when the twocarriages are brought together and coupled wlth each other end to end,the rods q are connected by links a with transverse coupling levers '0which are fulcrumed on brackets to attached to cross pieces of theframes 0 adjacent to the proximate ends of the carriages a and Z); Theends of the lever '12 on carriage aare bent upwardly and the ends of thelever '0 on carriage Z) are bent downwardly or vice versa, so that whenthe carriages are brought together and coupled, as shown in Figs. 1 and2, the fulcrums of said levers will be brought into vertical alinementand their corresponding ends into engagement with each other. Underthese conditions the lovers b'will act as one, thereby connecting theoffsetting levers m of the two carriages and causing them to be operatedin unison by the shoe 9" on the main carriage a. Thus it will be seenthat the offset-ting devices of the two carriages are operativelyconnected and are disconnected without care or attention whenever thecarriages are coupled and uncoupled.

Various modifications in the construction and arrangement of parts maybe made within the scope of the invention as defined in the followingclaims.

I claim:

1. The combination of two carriages provided with means for couplingthem together end to end and with offsetting mechanism, and couplinglevers mounted on said carriages and connected with the of]? settingmechanism thereof. said levers being arranged to be brought together andto operate in unison when the carriages are connected end to end.

2. The combination of two carriages each having a frame or log supportmovable on its trucks transversely to the saw plane and provided withoffsetting mechanism comprising a member movable longitudinally thereof,coupling means for connecting said carriages end to end, and transversecoupling levers fulcruined on the proximate Copies ofthis patent may beobtained for ends of the carriagesand adapted to be brought into andheld in contact with each other on opposite sides of their fulcrums Vand to operate in unison when the carriages are coupled together, eachof said levers being connected with the longitudinally movable member onthe same'carriage'.

3. The combination with carriages having coupling means for connectingthem end to end and each provided with offsetting mechanism, of couplinglevers ful:

crumed onthe carriages and connected with the offsetting mechanismthereof, said levers being offset to permit their fulcrums to be broughtinto alinement and their opposite ends into engagement with each otherwhen the carriages are connected end to end.

at. The combination. with carriages having coupling means for connectingthem end to end and each provided with offsetting mechanism. comprisinga member movable lengthwise of the carriage, of transverse couplinglevers vertically fulcrumed at difcarriage, of brackets attached to theends of the carriages, transverse coupling levers vertically fulcrumedbetweentheir ends at different levels on said brackets and verti: callyoffset to engage with each other laterally at their ends when thecarriages are brought together and the lever' fulcrums into verticalalinement, and links connecting said levers with the longitudinallymovable members of the offsetting mechamsm.

nature in presence of two witnesses. V

GEORGE M. P'ELTON.

Witnesses:

CHAS. L) Goss, FRANK E. DENNETT.

five cents each, by addressing the Commissioner of Patents. Washington,I). G. f

In witness whereof I hereto affix my sig

